EP1838912B1 - Device for the picking of weft threads in an air jet weaving machine - Google Patents

Device for the picking of weft threads in an air jet weaving machine Download PDF

Info

Publication number
EP1838912B1
EP1838912B1 EP06704340A EP06704340A EP1838912B1 EP 1838912 B1 EP1838912 B1 EP 1838912B1 EP 06704340 A EP06704340 A EP 06704340A EP 06704340 A EP06704340 A EP 06704340A EP 1838912 B1 EP1838912 B1 EP 1838912B1
Authority
EP
European Patent Office
Prior art keywords
control
main nozzles
main
regulating
weft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06704340A
Other languages
German (de)
French (fr)
Other versions
EP1838912A1 (en
Inventor
Patrick Puissant
Jean-Marie Bamelis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Picanol NV
Original Assignee
Picanol NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Picanol NV filed Critical Picanol NV
Publication of EP1838912A1 publication Critical patent/EP1838912A1/en
Application granted granted Critical
Publication of EP1838912B1 publication Critical patent/EP1838912B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3026—Air supply systems
    • D03D47/3053—Arrangements or lay out of air supply systems
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3026—Air supply systems
    • D03D47/3033—Controlling the air supply

Definitions

  • the invention relates to a device for introducing weft threads in an air jet loom with at least one set of successively connected main nozzles, each associated with a control valve whose settings determine the strength of a pulse transmission to the weft, the control valves by means of a control and adjustable are.
  • a set of main nozzles connected in series is used to enter a weft thread.
  • two main nozzles are connected in series, one of which is stationary and the other on a batten.
  • the invention has for its object to provide a device of the type mentioned, in which the vote of the shares of the main nozzles on the impulse transmission is straightforward.
  • the control and regulating device when setting a weaving machine to a new fabric, only a total value for the strength of the momentum transfer has to be set.
  • the control and regulating device then automatically takes over the setting of the individual control valves in a predetermined ratio to each other.
  • This automatic assignment of the settings of the control valves with each other is also retained when the weft insertion is regulated, for example, for the entry of weft threads of filament yarn.
  • the momentum transfer becomes the manipulated variable, which varies depending on the diameter of a weft coil.
  • the regulation changes the amount of compressed air and / or the pressure of the compressed air as a manipulated variable.
  • the control and regulating device automatically ensures that the ratio of the settings of the control valves of the main nozzles of a set is maintained in a suitable manner, according to predetermined criteria.
  • Fig. 1 is a loom 10 indicated by a loom on which a reed 11 and relay nozzles 12 are arranged.
  • a main nozzle 13 is arranged on the entry side, which forms, with an upstream main nozzle 14, a set of main nozzles which serve to introduce a weft thread 15.
  • the main nozzle 14 is fixedly mounted on the frame of the loom.
  • a weft thread 15 is measured in a known manner by means of a Vorspulaus 16 and blown by the main nozzles 13, 14 in a formed of warp threads shed. Within the shed, the weft is drawn from the relay nozzles 12, i. taken from the air streams blown out of these, and further transported to the opposite side of the loom. The arrival of the weft thread 15 on the side opposite the entry side is detected by means of a weft detector 30 and reported as a pulse signal a control and regulating device 17.
  • the relay nozzles 12 are connected to a compressed air supply device, which is not shown in detail.
  • the main nozzles 13, 14 are also connected to a source of compressed air or a device for supplying compressed air.
  • this contains a compressed-air source 18, which supplies compressed air to a tank 20 via a pressure-regulating valve 19.
  • the main nozzles 13, 14 are each connected via a control valve 21, 22 and a switching valve 23, 24 to the tank 20.
  • the control device 17 determines the switching times of the switching valves 23, 24 and the settings of the control valves 21, 22.
  • the main nozzles 13, 14 are connected via reducing valves 25, 26 to the tank. In the line between the reducing valves 25, 26 and the main nozzles 13, 14, a check valve 27, 28 is provided in each case.
  • the control valves 21, 22 are preferably flow control valves, with which the amount of compressed air, which flows to the main nozzles 13, 14, when the switching valves 23, 24 are opened. In the shooting pauses, i. when the switching valves 23, 24 are closed, compressed air flows from the tank 20 via the reducing valves 25, 26 to the main nozzles 13, 14. Thus, a compressed air flow is maintained in the main nozzles 13, 14, which keeps the weft thread 15 stretched.
  • the control valves 21, 22 pressure control valves.
  • the control and regulating device 17 further receives information about the instantaneous angular position of the main shaft of the loom. In the embodiment, this is done for example via an angle detector 31, which is associated with the shaft of the sley 10.
  • control and regulating device 17 is associated with an input unit 29, with the example, the target value for the angle of arrival of the main shaft can be entered, that is, the angle detected by the angle detector 31 angular position at which the weft thread 15 to reach the weft detector 30.
  • the operator can also adjust the impulse transmission to the weft thread 15 exerted by the set of main nozzles 13, 14.
  • Fig. 2 is shown with the X-axis, is provided for the pulse transmission, a setting range of about 25% to 100%.
  • the controller 17 automatically assigns to the selected value of the pulse transmission settings of the control valves 21, 22 of the main nozzles 13, 14, ie, for example, the opening cross sections of these control valves 21, 22.
  • the settings of Control valves 21, 22 determines what proportion of each main nozzle 13, 14 at the entire momentum transfer to the weft thread 15 has.
  • the control valve 21 of the main nozzle 13 is set according to the straight line 40 proportional to the selected pulse transmission, so that at 100% pulse transmission, the control valve 21 is fully open, ie, the opening cross section is 100%.
  • the opening cross section at 25% impulse transmission is 25%, etc.
  • the control and regulating device 17 automatically assigns an adjustment of the control valve 22 of the main nozzle 14 to the value of the selected impulse transmission. This assignment is with the curve 41 in FIG Fig. 2 shown.
  • the control valve 22 opens less than the control valve 21, ie the curve 41 has a lower slope than the curve 40.
  • the adjustment of the control valve 21 of the main nozzle 13 for adjusting the value of the pulse transmission takes place so that, for example, already at 75% pulse transmission a setting of 83% of the opening cross-section of the control valve 21 of the main nozzle 13 is achieved and at a momentum transfer of 90% already 100% opening cross section.
  • a setting of 83% of the opening cross-section of the control valve 21 of the main nozzle 13 is achieved and at a momentum transfer of 90% already 100% opening cross section.
  • an increase thus takes place essentially only by an increase in the momentum transfer by means of the main nozzle 14 whose control valve 22 is still changed in this area, for example, to a larger opening cross section.
  • the setting of the impulse transmission is done by means of an "imaginary" main nozzle.
  • the Weber sets a value for the momentum transfer, for example, 80%, in which case the control and regulating device 17 automatically adjusts the control valves 21, 22 to suitable values, for example so that the opening cross section of the control valve 21 to 90% and the opening cross section of the control valve 22 of the main nozzle 14 is set to 70%.
  • control valves 21, 22 are expediently equipped with stepper motors, which provide an exact adjustment of the opening cross-sections of the Control valves 21, 22 allow.
  • the control and regulating device 17 drives these stepper motors with pulses.
  • Such control valves are for example from the EP 879 307 B1 and the EP 1 086 265 B1 known.
  • filament yarn weft yarns 15 are relatively air-unfriendly when they are from outer layers of a weft yarn bobbin. They then become more and more air-friendly, if they come from further inside layers of this weft coil. Therefore, at the beginning of the execution of a weft bobbin, a stronger momentum transfer is needed, i. a relatively high pressure and / or a relatively high amount per unit time of compressed air, which are then reduced more and more, the farther this weft coil is processed.
  • This reduction of the momentum transfer can be done by means of a control that detects the arrival of the weft thread on the main nozzles 13, 14 opposite side by means of the weft detector 30 and the control and regulating device 17 reports.
  • the control and regulating device 17 additionally receives information about the instantaneous angle of rotation of the main shaft of the loom, for example by means of the angle detector 31 of the shaft of the sley 10. By means of these signals is detected whether a weft thread has arrived at the correct angular position of the main shaft of the loom. In the case of deviations, regulation takes place via the setting of the impulse transmission, i. the adjustment of the control valves 21, 22, in such a way that a constant angle of arrival is obtained.
  • the control and regulating device 17 automatically adjusts the ratio of the settings of the control valves 21, 22 in accordance with the changed momentum transfer.
  • These main nozzles are each control valves 21, 22, 47 assigned, which are actuated by the control and regulating device 17.
  • the control valves 21, 22, 47 are preceded by a common switching valve 49 which connects these control valves 21, 22, 47 with the tank 20.
  • the common switching valve 49 is actuated by the control and regulating device 17.
  • the controller 17 determines the ratio in which the control valves 21, 22, 47 are adjusted to each other, ie the proportion of the main nozzles 13, 48, 14 on the entire pulse transmission.
  • the weaver selects a momentum transfer of an "imaginary" main nozzle, which then automatically divides the control and regulating device by means of the setting of the control valves 21, 47, 22 on the main nozzles 13, 48, 14, without the weaver in normal operation of the loom some of it noted.
  • the number of main nozzles is basically arbitrary. If more than two main nozzles are provided, according to the invention at least two main nozzles should each be assigned a control valve which can be adjusted by the control and regulating device 17.
  • the operator of the weaving machine determines how the control and regulating device should work.
  • the weaver can also decide that during weaving the control and regulating device, for example, a setting of the control valves 21, 22 according to Fig. 2 has made to a setting according to Fig. 3 passes.
  • a setting of the control valves 21, 22 according to Fig. 2 has made to a setting according to Fig. 3 passes.
  • the control valves are adjusted Fig. 2 to a setting according to Fig. 3 is passed.
  • the control valve 21 is no longer at the value of 75%, but to the value of 83% according to the curve 42 after Fig. 3 set.
  • the curves 41 are the same. However, this is only an example, since the curves can also be formed substantially different. In particular, it is also possible to provide over the entire adjustment range of the pulse transmission that the ratio of the settings between the control valves 21, 22 of the main nozzles 13, 14 remains constant or that over the entire adjustment range, a constant difference is maintained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

A device for inserting of weft threads in an air jet weaving machine comprising at least one set of main nozzles (13, 14) which are mounted in series, and to which individual regulating valves (21, 22) are assigned, is provided with a control and regulating unit (17) which defines the individual settings of the regulating valves (21, 22) with respect to one another, in order to form an overall value for the intensity of the impulse transmission of the set of main nozzles with each regulating valve contributing a proportion of the overall impulse intensity.

Description

Die Erfindung betrifft eine Vorrichtung zum Eintragen von Schussfäden bei einer Luftdüsenwebmaschine mit wenigstens einem Satz von hinter einander geschalteten Hauptdüsen, denen jeweils ein Regelventil zugeordnet ist, deren Einstellungen die Stärke einer Impulsübertragung auf den Schussfaden bestimmen, wobei die Regelventile mittels einer Steuer- und Regeleinrichtung einstellbar sind.The invention relates to a device for introducing weft threads in an air jet loom with at least one set of successively connected main nozzles, each associated with a control valve whose settings determine the strength of a pulse transmission to the weft, the control valves by means of a control and adjustable are.

Ein Satz von hintereinander geschalteten Hauptdüsen dient jeweils zum Eintragen eines Schussfadens. In den meisten Fällen werden zwei Hauptdüsen hintereinander geschaltet, von welchen eine stationär und die andere auf einer Weblade angeordnet ist.A set of main nozzles connected in series is used to enter a weft thread. In most cases, two main nozzles are connected in series, one of which is stationary and the other on a batten.

Es ist bekannt ( EP 0 239 137 B1 ), nur der stationär angeordneten Hauptdüse ein Regelventil vorzuschalten und die nachfolgende Hauptdüse mit einem nicht geregelten Druckluftstrom zu versorgen. Bei dieser bekannten Vorrichtung kann die Wirkung der stationären Hauptdüse relativ gering werden, während die Wirkung der nachfolgenden Hauptdüse immer sehr stark ist. Dies kann dazu führen, dass die nachfolgende Hauptdüse zu stark bläst, d.h. einen zu starken Anteil an der Impulsübertragung auf den Schussfaden hat, was für Schussfäden und Schusseintragungen ungünstig sein kann.It is known ( EP 0 239 137 B1 ), only the stationary arranged main nozzle upstream of a control valve and supply the subsequent main nozzle with a non-regulated compressed air flow. In this known device, the effect of the stationary main nozzle can be relatively low, while the effect of the subsequent main nozzle is always very strong. This can cause the subsequent main jet to blow too much, ie to have a high proportion of the momentum transfer to the weft yarn, which can be unfavorable to weft yarns and weft insertion.

Es ist auch bekannt ( EP 0 879 307 B1 ), jedem Satz von hintereinander geschalteten Hauptdüsen ein gemeinsames Regelventil und ein gemeinsames Schaltventil zuzuordnen. Bei einer derartigen Vorrichtung ist es relativ schwierig, die Wirkungen der hintereinander geschalteten Hauptdüsen richtig aufeinander abzustimmen, d.h. eine geeignete Impulsübertragung einzustellen.It is also known ( EP 0 879 307 B1 ), each set of main nozzles connected in series to assign a common control valve and a common switching valve. In such a device, it is relatively difficult to control the effects of the series-connected one Correctly match main nozzles, ie to set a suitable momentum transfer.

Es ist auch bekannt ( EP 1 086 265 B1 ), den hintereinander angeordneten Hauptdüsen eines Satzes eigene Regelventile zuzuordnen, so dass für jede Hauptdüse die lmpulsübertragung individuell eingestellt werden kann. Das individuelle Einstellen kann in der Praxis zu Problemen führen, da die Anteile der hintereinander geschalteten Hauptdüsen an der gesamten Impulsübertragung aufeinander abgestimmt sein sollten. Zum einen sollte sichergestellt sein, dass ein Schussfaden zwischen den Hauptdüsen ausreichend gespannt ist, damit er nicht in Schlaufen oder dergleichen durchhängen kann. Zum anderen sollte ein Schussfaden jedoch keinen zu hohen Kräften ausgesetzt sein, so dass er nicht beschädigt wird.It is also known ( EP 1 086 265 B1 ), to assign the successively arranged main nozzles of a set own control valves, so that for each main nozzle, the pulse transmission can be set individually. The individual setting can lead to problems in practice, since the proportions of the series-connected main nozzles should be coordinated with each other throughout the pulse transmission. On the one hand, it should be ensured that a weft thread between the main nozzles is sufficiently tensioned so that it can not sag in loops or the like. On the other hand, a weft should not be exposed to excessive forces, so that it is not damaged.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, bei der die Abstimmung der Anteile der Hauptdüsen an der Impulsübertragung unproblematisch ist.The invention has for its object to provide a device of the type mentioned, in which the vote of the shares of the main nozzles on the impulse transmission is straightforward.

Diese Aufgabe wird durch die Merkmale aus Pätentanspruch 1 gelöst.This object is achieved by the features of Pätentanspruch 1.

Aufgrund der erfindungsgemäßen Ausbildung muss bei einem Einstellen einer Webmaschine auf ein neues Gewebe nur ein Gesamtwert für die Stärke der Impulsübertragung eingestellt werden. Die Steuer- und Regeleinrichtung übernimmt dann selbsttätig die Einstellung der einzelnen Regelventile in einem vorbestimmten Verhältnis zueinander. Diese automatische Zuordnung der Einstellungen der Regelventile untereinander bleibt auch erhalten, wenn der Schusseintrag geregelt wird, beisplelsweise für das Eintragen von Schussfäden aus Filamentgarn. In diesem Fall ist es zweckmäßig, beispielsweise eine Regelung auf einen konstanten Ankunftswinkel durchzuführen, d.h. auf einen Winkel der Hauptwelle der Webmaschine, bei welcher ein Schussfaden auf der gegenüberliegenden Seite ankommt. Bei dieser Regelung wird die Impulsübertragung die Stellgröße, die sich abhängig mit dem Durchmesser einer Schussfadenspule ändert. Bei Schussfäden aus Filamentgarn tritt häufig der Fall ein, dass Schussfäden von den äußeren Lagen der Spule mit einer größeren Menge an Druckluft und/oder mit Druckluft mit höherem Druck eingetragen werden müssen als gegen Ende der aufgebrauchten Spule. Um einen konstanten Ankunftswinkel einzuhalten, wird von der Regelung die Menge an Druckluft und/oder der Druck der Druckluft als Stellgröße verändert. Bei dieser Veränderung der Stellgröße sorgt die Steuer- und Regeleinrichtung selbsttätig dafür, dass das Verhältnis der Einstellungen der Regelventile der Hauptdüsen eines Satzes in geeigneter Weise, nach vorgegebenen Kriterien eingehalten wird.Because of the design according to the invention, when setting a weaving machine to a new fabric, only a total value for the strength of the momentum transfer has to be set. The control and regulating device then automatically takes over the setting of the individual control valves in a predetermined ratio to each other. This automatic assignment of the settings of the control valves with each other is also retained when the weft insertion is regulated, for example, for the entry of weft threads of filament yarn. In this Case, it is expedient, for example, to carry out a control to a constant angle of arrival, ie to an angle of the main shaft of the loom, in which a weft yarn arrives on the opposite side. In this scheme, the momentum transfer becomes the manipulated variable, which varies depending on the diameter of a weft coil. When filament yarn weft threads often occurs that weft threads must be entered from the outer layers of the coil with a larger amount of compressed air and / or compressed air at a higher pressure than towards the end of the spent coil. In order to maintain a constant angle of arrival, the regulation changes the amount of compressed air and / or the pressure of the compressed air as a manipulated variable. In this change in the manipulated variable, the control and regulating device automatically ensures that the ratio of the settings of the control valves of the main nozzles of a set is maintained in a suitable manner, according to predetermined criteria.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung der in den Zeichnungen dargestellten Ausführungsformen und den Unteransprüchen.

Fig. 1
zeigt in schematischer Darstellung eine erfindungsgemäße Vor- richtung zum Eintragen von Schussfäden bei einer Luftdüsen- webmaschine,
Fig. 2
ein Diagramm in welchem die Einstellungen der Regelventile zweier hintereinander geschalteter Hauptdüsen in Prozent des Öffnungsquerschnittes der Regelventile über dem Gesamtwert der einstellbaren Impulsübertragung in Prozent dargestellt ist,
Fig. 3
ein Diagramm ähnlich Fig. 2 mit einem abgewandelten Verlauf der Einstellungen der Regelventile über die Impulsübertragung und
Fig. 4
eine schematische Darstellung einer erfindungsgemäßen Vor- richtung mit einem Satz aus drei hintereinander geschalteten Hauptventilen zum Eintragen eines Schussfadens.
Further features and advantages of the invention will become apparent from the following description of the embodiments illustrated in the drawings and the dependent claims.
Fig. 1
shows a schematic representation of an inventive device for introducing weft threads in an air-jet weaving machine,
Fig. 2
a diagram in which the settings of the control valves of two series-connected main nozzles as a percentage of the opening cross-section of the control valves over the total value of the adjustable pulse transmission is shown in percent,
Fig. 3
a diagram similar Fig. 2 with a modified course of the settings of the control valves via the impulse transmission and
Fig. 4
a schematic representation of an inventive device with a set of three series-connected main valves for entering a weft thread.

In Fig. 1 ist von einer Webmaschine eine Weblade 10 angedeutet, auf der ein Webblatt 11 und Stafettendüsen 12 angeordnet sind. Auf der zu hin- und herschwenkenden Bewegungen angetriebenen Weblade 10 ist auf der Eintragsseite eine Hauptdüse 13 angeordnet, die mit einer vorgeschalteten Hauptdüse 14 einen Satz von Hauptdüsen bildet, die zum Eintragen eines Schussfadens 15 dienen. Die Hauptdüse 14 ist stationär an dem Gestell der Webmaschine angebracht.In Fig. 1 is a loom 10 indicated by a loom on which a reed 11 and relay nozzles 12 are arranged. On the bale side, which is driven to oscillate back and forth, a main nozzle 13 is arranged on the entry side, which forms, with an upstream main nozzle 14, a set of main nozzles which serve to introduce a weft thread 15. The main nozzle 14 is fixedly mounted on the frame of the loom.

Ein Schussfaden 15 wird in bekannter Weise mittels eines Vorspulgerätes 16 abgemessen und von den Hauptdüsen 13, 14 in ein aus Kettfäden gebildetes Webfach eingeblasen. Innerhalb des Webfaches wird der Schussfaden von den Stafettendüsen 12, d.h. von den von diesen ausgeblasenen Luftströmen, übernommen und zur gegenüberliegenden Seite der Webmaschine weiter transportiert. Die Ankunft des Schussfadens 15 auf der der Eintragsseite gegenüberliegenden Seite wird mittels eines Schussfadenwächters 30 detektiert und als Impulssignal eine Steuer- und Regeleinrichtung 17 gemeldet. Die Stafettendüsen 12 sind an einer Druckluftversorgungseinrichtung angeschlossen, die nicht näher dargestellt ist.A weft thread 15 is measured in a known manner by means of a Vorspulgerätes 16 and blown by the main nozzles 13, 14 in a formed of warp threads shed. Within the shed, the weft is drawn from the relay nozzles 12, i. taken from the air streams blown out of these, and further transported to the opposite side of the loom. The arrival of the weft thread 15 on the side opposite the entry side is detected by means of a weft detector 30 and reported as a pulse signal a control and regulating device 17. The relay nozzles 12 are connected to a compressed air supply device, which is not shown in detail.

Die Hauptdüsen 13, 14 sind ebenfalls an eine Druckluftquelle oder eine Einrichtung zur Versorgung mit Druckluft angeschlossen. Diese enthält bei dem Ausführungsbeispiel eine Druckluftquelle 18, die über ein Druckregulierventil 19 Druckluft einem Tank 20 zuführt. Die Hauptdüsen 13, 14 sind jeweils über ein Regelventil 21, 22 und ein Schaltventil 23, 24 an den Tank 20 angeschlossen. Die Steuer- und Regeleinrichtung 17 bestimmt die Schaltzeitpunkte der Schaltventile 23, 24 und die Einstellungen der Regelventile 21, 22. Zusätzlich sind die Hauptdüsen 13, 14 über Reduzierventile 25, 26 an den Tank angeschlossen. In der Leitung zwischen den Reduzierventilen 25, 26 und den Hauptdüsen 13, 14 ist jeweils ein Rückschlagventil 27, 28 vorgesehen.The main nozzles 13, 14 are also connected to a source of compressed air or a device for supplying compressed air. In the exemplary embodiment, this contains a compressed-air source 18, which supplies compressed air to a tank 20 via a pressure-regulating valve 19. The main nozzles 13, 14 are each connected via a control valve 21, 22 and a switching valve 23, 24 to the tank 20. The control device 17 determines the switching times of the switching valves 23, 24 and the settings of the control valves 21, 22. In addition, the main nozzles 13, 14 are connected via reducing valves 25, 26 to the tank. In the line between the reducing valves 25, 26 and the main nozzles 13, 14, a check valve 27, 28 is provided in each case.

Die Regelventile 21, 22 sind vorzugsweise Mengenregelventile, mit denen die Druckluftmenge geregelt werden kann, die zu den Hauptdüsen 13, 14 strömt, wenn die Schaltventile 23, 24 geöffnet sind. In den Schusspausen, d.h. wenn die Schaltventile 23, 24 geschlossen sind, strömt Druckluft aus dem Tank 20 über die Reduzierventile 25, 26 zu den Hauptdüsen 13, 14. Damit wird in den Hauptdüsen 13, 14 eine Druckluftströmung aufrechterhalten, die den Schussfaden 15 gespannt hält. Bei einer abgewandelten Ausführungsform sind die Regelventile 21, 22 Druckregelventile.The control valves 21, 22 are preferably flow control valves, with which the amount of compressed air, which flows to the main nozzles 13, 14, when the switching valves 23, 24 are opened. In the shooting pauses, i. when the switching valves 23, 24 are closed, compressed air flows from the tank 20 via the reducing valves 25, 26 to the main nozzles 13, 14. Thus, a compressed air flow is maintained in the main nozzles 13, 14, which keeps the weft thread 15 stretched. In a modified embodiment, the control valves 21, 22 pressure control valves.

Die Steuer- und Regeleinrichtung 17 erhält weiter Informationen über die momentane Winkelposition der Hauptwelle der Webmaschine. Bei dem Ausführungsbeispiel geschieht das beispielsweise über einen Winkeldetektor 31, der der Welle der Weblade 10 zugeordnet ist.The control and regulating device 17 further receives information about the instantaneous angular position of the main shaft of the loom. In the embodiment, this is done for example via an angle detector 31, which is associated with the shaft of the sley 10.

Weiter ist der Steuer- und Regeleinrichtung 17 eine Eingabeeinheit 29 zugeordnet, mit der beispielsweise der Sollwert für den Ankunftswinkel der Hauptwelle eingegeben werden kann, d.h. die von dem Winkeldetektor 31 erfasste Winkelposition, bei welcher der Schussfaden 15 den Schussfadenwächter 30 erreichen soll. Mittels der Eingabeeinheit 29 kann die Bedienungsperson darüber hinaus auch die von dem Satz von Hauptdüsen 13, 14 ausgeübte Impulsübertragung auf den Schussfaden 15 einstellen. Wie in Fig. 2 mit der X-Achse dargestellt ist, ist für die Impulsübertragung ein Einstellbereich von etwa 25% bis 100% vorgesehen. Wenn die Bedienungsperson eine Impulsübertragung in diesem Bereich vorwählt, so ordnet die Steuer- und Regeleinrichtung 17 dem ausgewählten Wert der Impulsübertragung Einstellungen der Regelventile 21, 22 der Hauptdüsen 13, 14 selbsttätig zu, d.h. beispielsweise die Öffnungsquerschnitte dieser Regelventile 21, 22. Die Einstellungen der Regelventile 21, 22 bestimmt, welchen Anteil die jeweilige Hauptdüse 13, 14 an der gesamten Impulsübertragung auf den Schussfaden 15 hat.Further, the control and regulating device 17 is associated with an input unit 29, with the example, the target value for the angle of arrival of the main shaft can be entered, that is, the angle detected by the angle detector 31 angular position at which the weft thread 15 to reach the weft detector 30. By means of the input unit 29, the operator can also adjust the impulse transmission to the weft thread 15 exerted by the set of main nozzles 13, 14. As in Fig. 2 is shown with the X-axis, is provided for the pulse transmission, a setting range of about 25% to 100%. When the operator preselects a pulse transmission in this range, the controller 17 automatically assigns to the selected value of the pulse transmission settings of the control valves 21, 22 of the main nozzles 13, 14, ie, for example, the opening cross sections of these control valves 21, 22. The settings of Control valves 21, 22 determines what proportion of each main nozzle 13, 14 at the entire momentum transfer to the weft thread 15 has.

Bei dem Ausführungsbeispiel nach Fig. 2 ist beispielsweise vorgesehen, dass das Regelventil 21 der Hauptdüse 13 entsprechend der Geraden 40 proportional zu der gewählten Impulsübertragung eingestellt wird, so dass bei 100% Impulsübertragung das Regelventil 21 vollständig offen ist, d.h. der Öffnungsquerschnitt 100% beträgt. Entsprechend beträgt der Öffnungsquerschnitt bei 25% Impulsübertragung 25% usw.. Die Steuer- und Regeleinrichtung 17 ordnet selbsttätig auch dem Wert der gewählten Impulsübertragung eine Einstellung des Regelventils 22 der Hauptdüse 14 zu. Diese Zuordnung ist mit der Kurve 41 in Fig. 2 dargestellt. Bei dem Ausführungsbeispiel ist vorgesehen, dass in dem Bereich A zwischen beispielsweise 50% und 75% der wählbaren Impulsübertragung das Regelventil 22 weniger öffnet, als das Regelventil 21, d.h. die Kurve 41 eine geringere Steigung als die Kurve 40 besitzt. In dem davor liegenden Bereich B von beispielsweise 40% bis 50% erfolgt das Verstellen beider Ventile 21, 22 in der Weise, dass eine konstante Differenz beibehalten wird, d.h. die Kurven 40, 41 haben die gleiche Steigung. Diese Auslegung ist auch in dem Bereich C zwischen 75% und 100% vorgesehen, in welchem ebenfalls eine konstante Differenz zwischen den Öffnungsquerschnitten der Ventile 21, 22 und damit zwischen den Kurven 40, 41 vorhanden ist. In dem Bereich D unterhalb von 40% ist bei dem Ausführungsbeispiel vorgesehen, dass der Öffnungsquerschnitt des Regelventils 22 auf einem konstanten Minimalwert gehalten wird. In allen Abschnitten A, B, C und D ist vorgesehen, dass die Einstellung des Ventils 22 derart ist, dass der Anteil an der Impulsübertragung der Hauptdüse 14 geringer als der Anteil an der Impulsübertragung der Hauptdüse 13 ist. Das kann beispielsweise auch dadurch erreicht werden, dass das Regelventil 22 insgesamt einen kleineren Öffnungsquerschnitt erhält oder, falls es gleich mit dem Regelventil 21 gestaltet ist, nur auf geringere Öffnungsquerschnitte geöffnet wird.According to the embodiment Fig. 2 For example, it is provided that the control valve 21 of the main nozzle 13 is set according to the straight line 40 proportional to the selected pulse transmission, so that at 100% pulse transmission, the control valve 21 is fully open, ie, the opening cross section is 100%. Correspondingly, the opening cross section at 25% impulse transmission is 25%, etc. The control and regulating device 17 automatically assigns an adjustment of the control valve 22 of the main nozzle 14 to the value of the selected impulse transmission. This assignment is with the curve 41 in FIG Fig. 2 shown. In the embodiment, it is provided that in the region A between, for example, 50% and 75% of the selectable pulse transmission, the control valve 22 opens less than the control valve 21, ie the curve 41 has a lower slope than the curve 40. In the preceding region B, for example, 40% to 50%, the adjustment of both valves 21, 22 in such a way that a constant difference is maintained, ie the curves 40, 41 have the same slope. This design is also provided in the range C between 75% and 100%, in which there is also a constant difference between the opening cross-sections of the valves 21, 22 and thus between the curves 40, 41. In the region D below 40% is provided in the embodiment that the opening cross-section of the control valve 22 is maintained at a constant minimum value. In all sections A, B, C and D is provided that the adjustment of the valve 22 is such that the proportion of the momentum transfer of the main nozzle 14 is less than the proportion of the momentum transfer of the main nozzle 13. This can also be achieved, for example, by virtue of the fact that the control valve 22 as a whole receives a smaller opening cross-section or, if it is designed identically with the control valve 21, is opened only for smaller opening cross-sections.

Es kann vorgesehen werden, dass in der Steuer- und Regeleinrichtung 17 mehrere. Verläufe für die Kurven 40, 41 abgelegt werden, die eine Bedienungsperson entsprechend vorbekannten Kriterien auswählen kann, um den Schusseintrag zu optimieren. Alternativ kann aber auch vorgesehen werden, dass die Bedienungsperson den Verlauf der Kurven 40 oder 41 und insbesondere den Verlauf der Kurve 41 selbst konfiguriert und so das Verhältnis bestimmt, in welchem die Steuer- und Regeleinrichtung dann das Verhältnis der Einstellungen der Regelventile 21, 22 der Hauptdüsen 13, 14 zueinander vornimmt.It can be provided that in the control and regulating device 17 more. Gradients for the curves 40, 41 are stored, which an operator can select in accordance with previously known criteria in order to optimize the weft insertion. Alternatively, however, it can also be provided that the operator configures the course of the curves 40 or 41 and in particular the course of the curve 41 itself and thus determines the ratio in which the control and regulating device then the ratio of the settings of the control valves 21, 22 of Main nozzles 13, 14 makes each other.

Bei dem Ausführungsbeispiel nach Fig. 3 ist vorgesehen, dass die Verstellung des Regelventils 21 der Hauptdüse 13 zur Einstellung des Wertes der Impulsübertragung so erfolgt, dass beispielsweise bereits bei 75% Impulsübertragung eine Einstellung von 83% des Öffnungsquerschnittes des Regelventils 21 der Hauptdüse 13 erreicht wird und bei einer Impulsübertragung von 90% bereits 100% Öffnungsquerschnitt. Im Bereich zwischen 90% und 100% der Impulsübertragung erfolgt eine Steigerung somit im wesentlichen nur noch durch eine Steigerung der Impulsübertragung mittels der Hauptdüse 14, deren Regelventil 22 in diesem Bereich noch verändert wird, beispielsweise auf einen größeren Öffnungsquerschnitt eingestellt wird.According to the embodiment Fig. 3 It is provided that the adjustment of the control valve 21 of the main nozzle 13 for adjusting the value of the pulse transmission takes place so that, for example, already at 75% pulse transmission a setting of 83% of the opening cross-section of the control valve 21 of the main nozzle 13 is achieved and at a momentum transfer of 90% already 100% opening cross section. In the range between 90% and 100% of the momentum transfer, an increase thus takes place essentially only by an increase in the momentum transfer by means of the main nozzle 14 whose control valve 22 is still changed in this area, for example, to a larger opening cross section.

Aus dem Vorstehenden wird deutlich, dass die Einstellung der Impulsübertragung mittels einer "imaginären" Hauptdüse erfolgt. Der Weber stellt einen Wert für die Impulsübertragung von beispielsweise 80% ein, wobei dann die Steuer- und Regeleinrichtung 17 selbsttätig die Regelventile 21, 22 auf geeignete Werte einstellt, beispielsweise so, dass der Öffnungsquerschnitt des Regelventils 21 auf 90% und der Öffnungsquerschnitt des Regelventils 22 der Hauptdüse 14 auf 70% eingestellt wird.From the above it is clear that the setting of the impulse transmission is done by means of an "imaginary" main nozzle. The Weber sets a value for the momentum transfer, for example, 80%, in which case the control and regulating device 17 automatically adjusts the control valves 21, 22 to suitable values, for example so that the opening cross section of the control valve 21 to 90% and the opening cross section of the control valve 22 of the main nozzle 14 is set to 70%.

Die Regelventile 21, 22 sind zweckmäßigerweise mit Schrittmotoren ausgestattet, die ein exaktes Einstellen der Öffnungsquerschnitte der Regelventile 21, 22 erlauben. Die Steuer- und Regeleinrichtung 17 steuert diese Schrittmotoren mit Impulsen an. Derartige Regelventile sind beispielsweise aus der EP 879 307 B1 und der EP 1 086 265 B1 bekannt.The control valves 21, 22 are expediently equipped with stepper motors, which provide an exact adjustment of the opening cross-sections of the Control valves 21, 22 allow. The control and regulating device 17 drives these stepper motors with pulses. Such control valves are for example from the EP 879 307 B1 and the EP 1 086 265 B1 known.

Wenn Schussfäden aus Filamentgarn verwoben werden, so ist es möglich, den Schusseintrag zu regeln. Es hat sich gezeigt, dass Schussfäden 15 aus Filamentgarn relativ luftunfreundlich sind, wenn sie von äußeren Lagen einer Schussfadenspule stammen. Sie werden dann mehr und mehr luftfreundlich, wenn sie von weiter innen liegenden Lagen dieser Schussfadenspule stammen. Zu Beginn des Abarbeitens einer Schussfadenspule wird deshalb eine stärkere Impulsübertragung benötigt, d.h. ein relativ hoher Druck und/oder eine relativ hohe Menge pro Zeiteinheit an Druckluft, die dann mehr und mehr reduziert werden, je weiter diese Schussfadenspule abgearbeitet wird. Dieses Reduzieren der Impulsübertragung kann mittels einer Regelung erfolgen, die mittels des Schussfadenwächters 30 die Ankunft des Schussfadens auf der den Hauptdüsen 13, 14 gegenüber liegenden Seite erfasst und der Steuer- und Regeleinrichtung 17 meldet. Die Steuer- und Regeleinrichtung 17 erhält zusätzlich Informationen über den momentanen Drehwinkel der Hauptwelle der Webmaschine, beispielsweise mittels des Winkeldetektors 31 der Welle der Weblade 10. Mittels dieser Signale wird erfasst, ob ein Schussfaden bei der richtigen Winkelposition der Hauptwelle der Webmaschine angekommen ist. Bei Abweichungen erfolgt eine Regelung über die Einstellung der Impulsübertragung, d.h. der Einstellung der Regelventile 21, 22, in der Weise, dass ein konstanter Ankunftswinkel erhalten wird. Die Steuer- und Regeleinrichtung 17 stellt dabei automatisch das Verhältnis der Einstellungen der Regelventile 21, 22 entsprechend der geänderten Impulsübertragung ein.When weft threads of filament yarn are woven, it is possible to control the weft insertion. It has been found that filament yarn weft yarns 15 are relatively air-unfriendly when they are from outer layers of a weft yarn bobbin. They then become more and more air-friendly, if they come from further inside layers of this weft coil. Therefore, at the beginning of the execution of a weft bobbin, a stronger momentum transfer is needed, i. a relatively high pressure and / or a relatively high amount per unit time of compressed air, which are then reduced more and more, the farther this weft coil is processed. This reduction of the momentum transfer can be done by means of a control that detects the arrival of the weft thread on the main nozzles 13, 14 opposite side by means of the weft detector 30 and the control and regulating device 17 reports. The control and regulating device 17 additionally receives information about the instantaneous angle of rotation of the main shaft of the loom, for example by means of the angle detector 31 of the shaft of the sley 10. By means of these signals is detected whether a weft thread has arrived at the correct angular position of the main shaft of the loom. In the case of deviations, regulation takes place via the setting of the impulse transmission, i. the adjustment of the control valves 21, 22, in such a way that a constant angle of arrival is obtained. The control and regulating device 17 automatically adjusts the ratio of the settings of the control valves 21, 22 in accordance with the changed momentum transfer.

Bei der Ausführungsform nach Fig. 4 ist vorgesehen, dass der zum Eintragen eines Schussfadens 15 dienende Satz Hauptdüsen aus der auf der Weblade 10 angeordneten Hauptdüse 13, der stationären Hauptdüse 14 und einer zwischengeschalteten, ebenfalls stationären Hauptdüse 48 besteht, d.h. aus drei hintereinander geschalteten Hauptdüsen 13, 48, 14. Diesen Hauptdüsen sind jeweils Regelventile 21, 22, 47 zugeordnet, die von der Steuer- und Regeleinrichtung 17 betätigt werden. Den Regelventilen 21, 22, 47 ist ein gemeinsames Schaltventil 49 vorgeschaltet, das diese Regelventile 21, 22, 47 mit dem Tank 20 verbindet. Das gemeinsame Schaltventil 49 wird von der Steuer- und Regeleinrichtung 17 betätigt. Auch bei dieser Ausführungsform legt die Steuer- und Regeleinrichtung 17 das Verhältnis fest, in welchem die Regelventile 21, 22, 47 zueinander eingestellt werden, d.h. den Anteil der Hauptdüsen 13, 48, 14 an der gesamten Impulsübertragung.In the embodiment according to Fig. 4 It is provided that the set for inputting a weft thread 15 set of main nozzles from the arranged on the sley 10 main nozzle 13, the stationary main nozzle 14 and an intermediate, also stationary main nozzle 48, ie, three successive main nozzles 13, 48, 14. These main nozzles are each control valves 21, 22, 47 assigned, which are actuated by the control and regulating device 17. The control valves 21, 22, 47 are preceded by a common switching valve 49 which connects these control valves 21, 22, 47 with the tank 20. The common switching valve 49 is actuated by the control and regulating device 17. Also in this embodiment, the controller 17 determines the ratio in which the control valves 21, 22, 47 are adjusted to each other, ie the proportion of the main nozzles 13, 48, 14 on the entire pulse transmission.

Auch bei dieser Ausführungsform nach Fig. 4 wählt der Weber eine Impulsübertragung einer "imaginären" Hauptdüse aus, die dann die Steuer- und Regeleinrichtung selbsttätig mittels der Einstellung der Regelventile 21, 47, 22 auf die Hauptdüsen 13, 48, 14 aufteilt, ohne dass der Weber im Normalbetrieb der Webmaschine etwas davon merkt.Also in this embodiment Fig. 4 the weaver selects a momentum transfer of an "imaginary" main nozzle, which then automatically divides the control and regulating device by means of the setting of the control valves 21, 47, 22 on the main nozzles 13, 48, 14, without the weaver in normal operation of the loom some of it noted.

Die Anzahl der Hauptdüsen ist im Prinzip beliebig. Sofern es mehr als zwei Hauptdüsen vorgesehen sind, so sollten nach der Erfindung wenigstens zwei Hauptdüsen jeweils ein von der Steuer- und Regeleinrichtung 17 einstellbares Regelventil zugeordnet werden.The number of main nozzles is basically arbitrary. If more than two main nozzles are provided, according to the invention at least two main nozzles should each be assigned a control valve which can be adjusted by the control and regulating device 17.

Die Bedienungsperson der Webmaschine, üblicherweise ein Weber, bestimmt, wie die Steuer- und Regeleinrichtung arbeiten soll. Dabei kann der Weber auch entscheiden, dass während des Webens die Steuer- und Regeleinrichtung, die beispielsweise eine Einstellung der Regelventile 21, 22 gemäß Fig. 2 vorgenommen hat, auf eine Einstellung gemäß Fig. 3 übergeht. Beispielsweise kann entschieden werden, dass während die Webmaschine mit einer Regelung auf konstanten Ankunftswinkel arbeitet, bei einer Impulsübertragung von 75% von der Einstellung der Regelventile nach Fig. 2 zu einer Einstellung gemäß Fig. 3 übergegangen wird. Dann wird das Regelventil 21 nicht mehr auf den Wert von 75%, sondern auf den Wert von 83% entsprechend der Kurve 42 nach Fig. 3 eingestellt.The operator of the weaving machine, usually a weaver, determines how the control and regulating device should work. In this case, the weaver can also decide that during weaving the control and regulating device, for example, a setting of the control valves 21, 22 according to Fig. 2 has made to a setting according to Fig. 3 passes. For example, it may be decided that while the loom is operating with a constant angle of arrival control, with a 75% momentum transfer, the control valves are adjusted Fig. 2 to a setting according to Fig. 3 is passed. Then, the control valve 21 is no longer at the value of 75%, but to the value of 83% according to the curve 42 after Fig. 3 set.

Bei den Ausführungsbeispielen nach Fig. 2 und 3 sind die Kurven 41 jeweils gleich. Das ist jedoch nur ein Beispiel, da die Kurven auch wesentlich unterschiedlich ausgebildet sein können. Insbesondere ist es auch möglich, über den gesamten Einstellbereich der Impulsübertragung vorzusehen, dass das Verhältnis der Einstellungen zwischen den Regelventilen 21, 22 der Hauptdüsen 13, 14 konstant bleibt oder dass über den gesamten Einstellbereich eine konstante Differenz eingehalten wird.In the embodiments according to Fig. 2 and 3 the curves 41 are the same. However, this is only an example, since the curves can also be formed substantially different. In particular, it is also possible to provide over the entire adjustment range of the pulse transmission that the ratio of the settings between the control valves 21, 22 of the main nozzles 13, 14 remains constant or that over the entire adjustment range, a constant difference is maintained.

Claims (4)

  1. Device for inserting weft threads in an air jet weaving machine comprising at least one set of main nozzles (13, 14; 13, 48, 14) connected in series, to which each time a regulating valve (21, 22 ; 21, 47, 22) is assigned, their settings determining the intensity of an impulse transmission on the weft thread (15), wherein the regulating valves are adjustable by a control and regulating unit (17), characterised in that a value for the intensity of the impulse transmission that is executed by the set of main nozzles (13, 14 ; 13, 48, 14) on the weft thread (15) is adjustable by means of the control and regulating unit (17), that assigns to this value automatically settings of the regulating valves (21, 22; 21, 47, 22) of the main nozzles, that determine which part the respective main nozzle has to the overall intensity of the impulse transmission.
  2. Device according to claim 1, characterised in that the control and regulating unit (17), at least in a part range (B, C) of the adjustable overall value of the impulse transmission, defines a constant difference between the settings of the regulating valves (21, 22 ; 21, 47, 22) of the set of main nozzles (13, 14 ; 13, 48, 14).
  3. Device according to claim 1 or 2, characterised in that the control and regulating unit (17) at least in a part range (D, E) of the adjustable overall value of the impulse transmission, keeps constant the setting of a regulating valve (21, 22, 47) of at least one main nozzle (13, 14, 48) of the set of main nozzles (13, 14 ; 13, 48, 14).
  4. Device according to any one of claims 1 to 3, characterised in that the control and regulating unit (17) at least in a part range (A) of the preset overall value of the impulse transmission, defines the settings of the regulating valves (21, 22 ; 21, 47, 22) of a set of main nozzles (13, 14 ; 13, 47, 14) with ratios which change with respect to one another according to a predetermined profile.
EP06704340A 2005-01-21 2006-01-17 Device for the picking of weft threads in an air jet weaving machine Not-in-force EP1838912B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005004064A DE102005004064A1 (en) 2005-01-21 2005-01-21 Device for introducing weft threads in an air-jet loom
PCT/EP2006/000346 WO2006077063A1 (en) 2005-01-21 2006-01-17 Device for the picking of weft threads in an air jet weaving machine

Publications (2)

Publication Number Publication Date
EP1838912A1 EP1838912A1 (en) 2007-10-03
EP1838912B1 true EP1838912B1 (en) 2010-11-17

Family

ID=36118044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06704340A Not-in-force EP1838912B1 (en) 2005-01-21 2006-01-17 Device for the picking of weft threads in an air jet weaving machine

Country Status (6)

Country Link
US (1) US7726351B2 (en)
EP (1) EP1838912B1 (en)
CN (1) CN101107391B (en)
AT (1) ATE488628T1 (en)
DE (2) DE102005004064A1 (en)
WO (1) WO2006077063A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8658349B2 (en) 2006-07-13 2014-02-25 Seahorse Bioscience Cell analysis apparatus and method
BE1016504A3 (en) * 2005-04-25 2006-12-05 Picanol Nv METHOD FOR INSERTING AN IMPRESSION THREAD IN A WEAVING MACHINE
BE1016900A3 (en) * 2005-12-20 2007-09-04 Picanol Nv METHOD FOR INSERTING AN IMPRESSION THREAD TO A WEAVING MACHINE AND A WEAVING MACHINE
CN101437995B (en) * 2006-05-04 2011-02-09 泰克斯蒂尔玛股份公司 Loom, in particular a ribbon loom
EP2037024B1 (en) * 2007-09-12 2010-08-25 ITEMA (Switzerland) Ltd. Method for regulating the pressure in a loom and loom with a pressure regulation system
EP2163670B1 (en) 2008-09-12 2014-11-05 Picanol Method for controlling transportation of a weft thread through a shed
BE1018762A3 (en) 2009-05-27 2011-08-02 Picanol Nv METHOD FOR INSERTING AN IMPRESSION THREAD AND AERIAL WEAVING MACHINE.
DE102010044127B3 (en) * 2010-11-18 2011-12-29 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Gripper head for the entry of weft threads on a rapier loom and a rapier loom with such a gripper head
JP5321662B2 (en) * 2011-09-14 2013-10-23 株式会社豊田自動織機 Weft insertion device for air jet loom
JP5760960B2 (en) * 2011-11-04 2015-08-12 株式会社豊田自動織機 Weft insertion device for air jet loom
CN102677371A (en) * 2012-06-12 2012-09-19 江苏万工科技集团有限公司 Main nozzle for secondary acceleration of airflow and air supply system of main nozzle
CN104790100B (en) * 2015-04-28 2016-05-11 宁波市东盛纺织有限公司 A kind of air-jet loom
CN104790099B (en) * 2015-04-28 2016-05-11 宁波市东盛纺织有限公司 A kind of air-jet loom with air-guide rod
CN104790101B (en) * 2015-04-28 2016-08-24 宁波市东盛纺织有限公司 A kind of air-jet loom in wide size
JP2023110373A (en) * 2022-01-28 2023-08-09 津田駒工業株式会社 Weft insertion method and weft insertion device in air jet loom

Family Cites Families (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303857A (en) * 1963-08-09 1967-02-14 Scheffel Walter Loom with pneumatic picking means
JPS509904B1 (en) * 1969-10-08 1975-04-16
FR2064236B1 (en) * 1969-10-10 1979-03-26
CS165002B1 (en) * 1970-09-18 1975-11-28
CS179657B1 (en) * 1975-06-10 1977-11-30 Juraj Spisiak Wiring of apparatus for controlling active elements of weft inserting duct in jet weaving machines
NL7701916A (en) * 1976-02-27 1977-08-30 Scheffel Walter METHOD AND DEVICE FOR INSERTING THE Weft INTO A Loom.
US4347872A (en) * 1979-08-06 1982-09-07 Leesona Corporation Air weft insertion system
US4458729A (en) * 1979-08-06 1984-07-10 Leesona Corporation Strand delivery and storage system
US4466468A (en) * 1979-08-06 1984-08-21 Leesona Corporation Strand delivery system
CH647017A5 (en) * 1980-10-22 1984-12-28 Rueti Ag Maschf AIR SUPPLY SYSTEM FOR A PNEUMATIC WEAVING MACHINE.
BE889254A (en) * 1981-06-17 1981-12-17 Picanol Nv Device for controlling nozzles and other parts of an air loom
NL8103184A (en) * 1981-07-02 1983-02-01 Rueti Te Strake Bv METHOD FOR WEAVING ON A WEAVING MACHINE USING A BLOWING NOZZLE FOR A FLOWING TRANSPORT MEDIUM.
NL8200169A (en) * 1982-01-18 1983-08-16 Rueti Te Strake Bv METHOD FOR WEAVING ON A SPOOLLESS WEAVING MACHINE.
NL8203808A (en) * 1982-09-30 1984-04-16 Rueti Te Strake Bv METHOD FOR TRANSPORTING A Weft Thread Through The Weaving Box Using A Flowing Medium At A Spoolless Weaving Machine, And Weaving Machine, Equipped For Application Of This Method
FR2556375B1 (en) * 1983-12-13 1986-06-20 Saurer Diederichs Sa COMPRESSED AIR SUPPLY DEVICE FOR A WEAVING MACHINE WITH PNEUMATIC INSERTION OF AT LEAST TWO WEFT YARNS
BE903156A (en) * 1985-08-30 1986-02-28 Picanol Nv VALVE DEVICE FOR OPERATING BLAZERS ATTACHED TO DRAWERS AT WEAVING MACHINES
NL8503439A (en) * 1985-12-13 1987-07-01 Picanol Nv APPARATUS FOR SUPPLYING A WAVE THREAD TO A MAIN BLOWER AT WEAVING MACHINES.
BE904260A (en) * 1986-02-21 1986-08-21 Picanol Nv Apparatus for the insertion of weft threads in GAAP at airjet weaving machines and adjustable blowers.
NL8600713A (en) * 1986-03-20 1987-10-16 Picanol Nv METHOD FOR CONTROLLING INFLUENCERS IN THE INSERT OF A Weft Thread, In Weaving Machines; AND DEVICE USED FOR THIS.
DE3818766A1 (en) * 1988-06-02 1989-12-07 Dornier Gmbh Lindauer NOZZLE CONTROL FOR AN AIR Loom
BE1003558A3 (en) * 1989-09-19 1992-04-21 Picanol Nv BLOW device for weft threads in weaving machines.
BE1003686A3 (en) * 1990-02-15 1992-05-19 Picanol Nv Device for feeding weft thread in air looms.
DE4029743A1 (en) * 1990-09-20 1992-04-30 Picanol Nv METHOD AND NOZZLE ARRANGEMENT FOR CLEANING AIR JETS AND WEB SHEETS IN AIR JET WAVING MACHINES
US5295515A (en) * 1991-02-25 1994-03-22 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Apparatus for controlling weft insertion in jet loom
DE4131474C2 (en) * 1991-09-21 1995-01-05 Dornier Gmbh Lindauer Weft insertion method on an air jet loom
BE1006295A3 (en) * 1992-10-14 1994-07-12 Picanol Nv Method and device for registering wire fracture characteristics of looms.
US5462095A (en) * 1993-02-08 1995-10-31 Hokuriku Seikei Industrial Co., Ltd. Picking device with selected spools for a water-jet loom
BE1006981A3 (en) * 1993-04-06 1995-02-07 Picanol Nv INSERTION SYSTEM FOR WEAVING MACHINES.
DE19517748A1 (en) * 1994-05-16 1995-11-23 Toyoda Automatic Loom Works In air jet loom pressure transients are minimised without bulky appts.
DE59510997D1 (en) * 1994-09-16 2005-05-04 Picanol Nv Throttling valve for compressed air or the like and its use in a loom
BE1010015A3 (en) * 1996-02-09 1997-11-04 Picanol Nv Apparatus for supplying compressed air to a main blower of a weaving machine.
DE19611320C2 (en) * 1996-03-22 1999-05-20 Dornier Gmbh Lindauer Method and device for pneumatically supporting the insertion and tensioning of a weft thread in weaving machines
BE1011183A3 (en) * 1997-05-28 1999-06-01 Picanol Nv Insertion system for a weaving machine.
DE29806552U1 (en) * 1998-04-09 1998-07-09 Dornier Gmbh Lindauer Weft insertion device for an air jet loom
BE1012032A3 (en) * 1998-06-10 2000-04-04 Picanol Nv AIR BLOCK for a weaving machine.
BE1013392A3 (en) * 2000-04-14 2001-12-04 Picanol Nv METHOD AND DEVICE FOR MAKING A loom.
DE10124290C1 (en) * 2001-05-17 2003-01-23 Dornier Gmbh Lindauer Jet weaving machine, in particular air jet weaving machine with a weft insertion system
JP3820994B2 (en) * 2002-01-16 2006-09-13 株式会社豊田自動織機 Weft insertion device in jet loom
JP2004052171A (en) * 2002-07-22 2004-02-19 Tsudakoma Corp Method for controlling weft inserting in air-jet loom
JP2004162221A (en) * 2002-11-14 2004-06-10 Tsudakoma Corp Air feeder of air injection type loom
BE1015261A3 (en) * 2002-12-19 2004-12-07 Picanol Nv SPRAY NOZZLE SUPPORTING a weft thread in a weaving machine.
EP1473391B1 (en) * 2003-04-29 2006-11-08 Sultex AG Weft insertion system and method

Also Published As

Publication number Publication date
US7726351B2 (en) 2010-06-01
US20080216912A1 (en) 2008-09-11
WO2006077063A1 (en) 2006-07-27
CN101107391B (en) 2011-02-09
DE102005004064A1 (en) 2006-07-27
EP1838912A1 (en) 2007-10-03
CN101107391A (en) 2008-01-16
DE502006008322D1 (en) 2010-12-30
ATE488628T1 (en) 2010-12-15

Similar Documents

Publication Publication Date Title
EP1838912B1 (en) Device for the picking of weft threads in an air jet weaving machine
EP2013389B1 (en) Ribbon loom
DE102013219942A1 (en) Method and device for applying forces and movements to warp threads of a loom
EP1272699B1 (en) Method for adjusting the weaving parameters of weaving machines, and control device
EP2059633B1 (en) Ribbon needle loom
EP1899516B1 (en) Method and device for maintaining a weft thread which is introduced into a weaving machine, in particular an air-jet weaving machine, after the starting process
DE102004063683A1 (en) Production of double-face leno fabric, e.g. for floor covering, involves a dense weave with different tensions and thickness in base and twist warp
DE202019101093U1 (en) Device for cutting the weft threads in a rapier loom without forming a false selvage
DE3300934A1 (en) Process for inserting various weft yarns of differing yarn nature into the shed of a jet-weaving machine and jet-weaving machine for carrying out the process
DE19913398C2 (en) Method for determining the start time of weft insertion when the speed of the main drive of an air jet loom changes
EP1786963B1 (en) Method for gripping weft threads gripping device and loom with at least one gripper device for weft threads
DE2328135A1 (en) PROCESS AND DEVICE ON WEB MACHINES IN WHICH THE WEFT FEET IS ENTERED INTO THE WEB COMPARTMENT BY A FLUIDUM
EP2683862B1 (en) Dobby loom and corresponding weaving method
DE10028049A1 (en) Jet loom valve structure has a piezo electric actuator with a valve plate at the outlet to adjust the carrier medium pressure/volume on a deviation between actual and nominal weft flight times to give identical weaving cycles
EP1367159B1 (en) Process and device for bringing a clamped weft yarn to a bringer gripper of a loom
DE3028126A1 (en) METHOD AND DEVICE FOR INSERTING A Weft THREAD INTO THE COMPARTMENT OF A WOVENING MACHINE
EP1956124B1 (en) Method and device for opening or closing a grip clamp of a gripper of a loom
DE60207470T2 (en) Apparatus for adjusting the tension of the pile warp yarns in a double-piece weaving machine
DE2716282A1 (en) Double-pile weaving tension control - measures pile yarn tension when loom stops for comparison with warp tension for correction
DE102022205936B3 (en) METHOD FOR REGULATION OF AIR SUPPLY PRESSURE OF A LOOPPING MACHINE PLANT WITH SEVERAL AIR-JET WEAVING MACHINES, SYSTEM FOR REGULATION OF AIR SUPPLY PRESSURE OF A LOOPPING MACHINE PLANT AND LOOPPING MACHINE PLANT
DE102007042348A1 (en) Method and apparatus for eliminating weft threads with thread irregularities from fabrics
DE69203500T2 (en) Device for tensioning the weft end in air jet weaving machines.
DE4404423A1 (en) System for maintaining a constant loop height on looped fabric during the reversing movement of the looping beam
WO2005047582A1 (en) Weaving method and device
WO2005111285A1 (en) Power weaving loom which allows for individual weaving designs and weave diagrams in tissue manufacture and corresponding method for individual weaving designs and weave diagrams

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070718

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20090210

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 502006008322

Country of ref document: DE

Date of ref document: 20101230

Kind code of ref document: P

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: PICANOL

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ZIMMERLI, WAGNER & PARTNER AG

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20101117

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20101117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110317

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110317

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110217

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110228

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110131

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110930

26N No opposition filed

Effective date: 20110818

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110131

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502006008322

Country of ref document: DE

Effective date: 20110818

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110217

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 488628

Country of ref document: AT

Kind code of ref document: T

Effective date: 20110117

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006008322

Country of ref document: DE

Representative=s name: PATENTANWAELTE RUFF, WILHELM, BEIER, DAUSTER &, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006008322

Country of ref document: DE

Representative=s name: PATENTANWAELTE RUFF, WILHELM, BEIER, DAUSTER &, DE

Effective date: 20120814

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006008322

Country of ref document: DE

Owner name: PICANOL, BE

Free format text: FORMER OWNER: PICANOL N.V., IEPER, BE

Effective date: 20120814

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101117

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: WAGNER PATENT AG, CH

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20160121

Year of fee payment: 11

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20200123

Year of fee payment: 15

Ref country code: IT

Payment date: 20200122

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20200109

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006008322

Country of ref document: DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210803

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210131